src/ap/sta_info.c

   1 /*
   2  * hostapd / Station table
   3  * Copyright (c) 2002-2011, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "utils/includes.h"
  10
  11 #include "utils/common.h"
  12 #include "utils/eloop.h"
  13 #include "common/ieee802_11_defs.h"
  14 #include "common/wpa_ctrl.h"
  15 #include "radius/radius.h"
  16 #include "radius/radius_client.h"
  17 #include "drivers/driver.h"
  18 #include "p2p/p2p.h"
  19 #include "hostapd.h"
  20 #include "accounting.h"
  21 #include "ieee802_1x.h"
  22 #include "ieee802_11.h"
  23 #include "wpa_auth.h"
  24 #include "preauth_auth.h"
  25 #include "ap_config.h"
  26 #include "beacon.h"
  27 #include "ap_mlme.h"
  28 #include "vlan_init.h"
  29 #include "p2p_hostapd.h"
  30 #include "ap_drv_ops.h"
  31 #include "gas_serv.h"
  32 #include "sta_info.h"
  33
  34 static void ap_sta_remove_in_other_bss(struct hostapd_data *hapd,
  35                                        struct sta_info *sta);
  36 static void ap_handle_session_timer(void *eloop_ctx, void *timeout_ctx);
  37 static void ap_sta_deauth_cb_timeout(void *eloop_ctx, void *timeout_ctx);
  38 static void ap_sta_disassoc_cb_timeout(void *eloop_ctx, void *timeout_ctx);
  39 #ifdef CONFIG_IEEE80211W
  40 static void ap_sa_query_timer(void *eloop_ctx, void *timeout_ctx);
  41 #endif /* CONFIG_IEEE80211W */
  42 static int ap_sta_remove(struct hostapd_data *hapd, struct sta_info *sta);
  43
  44 int ap_for_each_sta(struct hostapd_data *hapd,
  45                     int (*cb)(struct hostapd_data *hapd, struct sta_info *sta,
  46                               void *ctx),
  47                     void *ctx)
  48 {
  49         struct sta_info *sta;
  50
  51         for (sta = hapd->sta_list; sta; sta = sta->next) {
  52                 if (cb(hapd, sta, ctx))
  53                         return 1;
  54         }
  55
  56         return 0;
  57 }
  58
  59
  60 struct sta_info * ap_get_sta(struct hostapd_data *hapd, const u8 *sta)
  61 {
  62         struct sta_info *s;
  63
  64         s = hapd->sta_hash[STA_HASH(sta)];
  65         while (s != NULL && os_memcmp(s->addr, sta, 6) != 0)
  66                 s = s->hnext;
  67         return s;
  68 }
  69
  70
  71 static void ap_sta_list_del(struct hostapd_data *hapd, struct sta_info *sta)
  72 {
  73         struct sta_info *tmp;
  74
  75         if (hapd->sta_list == sta) {
  76                 hapd->sta_list = sta->next;
  77                 return;
  78         }
  79
  80         tmp = hapd->sta_list;
  81         while (tmp != NULL && tmp->next != sta)
  82                 tmp = tmp->next;
  83         if (tmp == NULL) {
  84                 wpa_printf(MSG_DEBUG, "Could not remove STA " MACSTR " from "
  85                            "list.", MAC2STR(sta->addr));
  86         } else
  87                 tmp->next = sta->next;
  88 }
  89
  90
  91 void ap_sta_hash_add(struct hostapd_data *hapd, struct sta_info *sta)
  92 {
  93         sta->hnext = hapd->sta_hash[STA_HASH(sta->addr)];
  94         hapd->sta_hash[STA_HASH(sta->addr)] = sta;
  95 }
  96
  97
  98 static void ap_sta_hash_del(struct hostapd_data *hapd, struct sta_info *sta)
  99 {
 100         struct sta_info *s;
 101
 102         s = hapd->sta_hash[STA_HASH(sta->addr)];
 103         if (s == NULL) return;
 104         if (os_memcmp(s->addr, sta->addr, 6) == 0) {
 105                 hapd->sta_hash[STA_HASH(sta->addr)] = s->hnext;
 106                 return;
 107         }
 108
 109         while (s->hnext != NULL &&
 110                os_memcmp(s->hnext->addr, sta->addr, ETH_ALEN) != 0)
 111                 s = s->hnext;
 112         if (s->hnext != NULL)
 113                 s->hnext = s->hnext->hnext;
 114         else
 115                 wpa_printf(MSG_DEBUG, "AP: could not remove STA " MACSTR
 116                            " from hash table", MAC2STR(sta->addr));
 117 }
 118
 119
 120 void ap_free_sta(struct hostapd_data *hapd, struct sta_info *sta)
 121 {
 122         int set_beacon = 0;
 123
 124         accounting_sta_stop(hapd, sta);
 125
 126         /* just in case */
 127         ap_sta_set_authorized(hapd, sta, 0);
 128
 129         if (sta->flags & WLAN_STA_WDS)
 130                 hostapd_set_wds_sta(hapd, sta->addr, sta->aid, 0);
 131
 132         if (!(sta->flags & WLAN_STA_PREAUTH))
 133                 hostapd_drv_sta_remove(hapd, sta->addr);
 134
 135         ap_sta_hash_del(hapd, sta);
 136         ap_sta_list_del(hapd, sta);
 137
 138         if (sta->aid > 0)
 139                 hapd->sta_aid[(sta->aid - 1) / 32] &=
 140                         ~BIT((sta->aid - 1) % 32);
 141
 142         hapd->num_sta--;
 143         if (sta->nonerp_set) {
 144                 sta->nonerp_set = 0;
 145                 hapd->iface->num_sta_non_erp--;
 146                 if (hapd->iface->num_sta_non_erp == 0)
 147                         set_beacon++;
 148         }
 149
 150         if (sta->no_short_slot_time_set) {
 151                 sta->no_short_slot_time_set = 0;
 152                 hapd->iface->num_sta_no_short_slot_time--;
 153                 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
 154                     && hapd->iface->num_sta_no_short_slot_time == 0)
 155                         set_beacon++;
 156         }
 157
 158         if (sta->no_short_preamble_set) {
 159                 sta->no_short_preamble_set = 0;
 160                 hapd->iface->num_sta_no_short_preamble--;
 161                 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
 162                     && hapd->iface->num_sta_no_short_preamble == 0)
 163                         set_beacon++;
 164         }
 165
 166         if (sta->no_ht_gf_set) {
 167                 sta->no_ht_gf_set = 0;
 168                 hapd->iface->num_sta_ht_no_gf--;
 169         }
 170
 171         if (sta->no_ht_set) {
 172                 sta->no_ht_set = 0;
 173                 hapd->iface->num_sta_no_ht--;
 174         }
 175
 176         if (sta->ht_20mhz_set) {
 177                 sta->ht_20mhz_set = 0;
 178                 hapd->iface->num_sta_ht_20mhz--;
 179         }
 180
 181 #ifdef CONFIG_P2P
 182         if (sta->no_p2p_set) {
 183                 sta->no_p2p_set = 0;
 184                 hapd->num_sta_no_p2p--;
 185                 if (hapd->num_sta_no_p2p == 0)
 186                         hostapd_p2p_non_p2p_sta_disconnected(hapd);
 187         }
 188 #endif /* CONFIG_P2P */
 189
 190 #if defined(NEED_AP_MLME) && defined(CONFIG_IEEE80211N)
 191         if (hostapd_ht_operation_update(hapd->iface) > 0)
 192                 set_beacon++;
 193 #endif /* NEED_AP_MLME && CONFIG_IEEE80211N */
 194
 195         if (set_beacon)
 196                 ieee802_11_set_beacons(hapd->iface);
 197
 198         wpa_printf(MSG_DEBUG, "%s: cancel ap_handle_timer for " MACSTR,
 199                    __func__, MAC2STR(sta->addr));
 200         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 201         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 202         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 203         eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta);
 204
 205         ieee802_1x_free_station(sta);
 206         wpa_auth_sta_deinit(sta->wpa_sm);
 207         rsn_preauth_free_station(hapd, sta);
 208 #ifndef CONFIG_NO_RADIUS
 209         radius_client_flush_auth(hapd->radius, sta->addr);
 210 #endif /* CONFIG_NO_RADIUS */
 211
 212         os_free(sta->last_assoc_req);
 213         os_free(sta->challenge);
 214
 215 #ifdef CONFIG_IEEE80211W
 216         os_free(sta->sa_query_trans_id);
 217         eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 218 #endif /* CONFIG_IEEE80211W */
 219
 220 #ifdef CONFIG_P2P
 221         p2p_group_notif_disassoc(hapd->p2p_group, sta->addr);
 222 #endif /* CONFIG_P2P */
 223
 224 #ifdef CONFIG_INTERWORKING
 225         if (sta->gas_dialog) {
 226                 int i;
 227                 for (i = 0; i < GAS_DIALOG_MAX; i++)
 228                         gas_serv_dialog_clear(&sta->gas_dialog[i]);
 229                 os_free(sta->gas_dialog);
 230         }
 231 #endif /* CONFIG_INTERWORKING */
 232
 233         wpabuf_free(sta->wps_ie);
 234         wpabuf_free(sta->p2p_ie);
 235
 236         os_free(sta->ht_capabilities);
 237         os_free(sta->psk);
 238         os_free(sta->identity);
 239         os_free(sta->radius_cui);
 240
 241         os_free(sta);
 242 }
 243
 244
 245 void hostapd_free_stas(struct hostapd_data *hapd)
 246 {
 247         struct sta_info *sta, *prev;
 248
 249         sta = hapd->sta_list;
 250
 251         while (sta) {
 252                 prev = sta;
 253                 if (sta->flags & WLAN_STA_AUTH) {
 254                         mlme_deauthenticate_indication(
 255                                 hapd, sta, WLAN_REASON_UNSPECIFIED);
 256                 }
 257                 sta = sta->next;
 258                 wpa_printf(MSG_DEBUG, "Removing station " MACSTR,
 259                            MAC2STR(prev->addr));
 260                 ap_free_sta(hapd, prev);
 261         }
 262 }
 263
 264
 265 /**
 266  * ap_handle_timer - Per STA timer handler
 267  * @eloop_ctx: struct hostapd_data *
 268  * @timeout_ctx: struct sta_info *
 269  *
 270  * This function is called to check station activity and to remove inactive
 271  * stations.
 272  */
 273 void ap_handle_timer(void *eloop_ctx, void *timeout_ctx)
 274 {
 275         struct hostapd_data *hapd = eloop_ctx;
 276         struct sta_info *sta = timeout_ctx;
 277         unsigned long next_time = 0;
 278
 279         wpa_printf(MSG_DEBUG, "%s: " MACSTR " flags=0x%x timeout_next=%d",
 280                    __func__, MAC2STR(sta->addr), sta->flags,
 281                    sta->timeout_next);
 282         if (sta->timeout_next == STA_REMOVE) {
 283                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 284                                HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 285                                "local deauth request");
 286                 ap_free_sta(hapd, sta);
 287                 return;
 288         }
 289
 290         if ((sta->flags & WLAN_STA_ASSOC) &&
 291             (sta->timeout_next == STA_NULLFUNC ||
 292              sta->timeout_next == STA_DISASSOC)) {
 293                 int inactive_sec;
 294                 /*
 295                  * Add random value to timeout so that we don't end up bouncing
 296                  * all stations at the same time if we have lots of associated
 297                  * stations that are idle (but keep re-associating).
 298                  */
 299                 int fuzz = os_random() % 20;
 300                 inactive_sec = hostapd_drv_get_inact_sec(hapd, sta->addr);
 301                 if (inactive_sec == -1) {
 302                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 303                                 "Check inactivity: Could not "
 304                                 "get station info from kernel driver for "
 305                                 MACSTR, MAC2STR(sta->addr));
 306                         /*
 307                          * The driver may not support this functionality.
 308                          * Anyway, try again after the next inactivity timeout,
 309                          * but do not disconnect the station now.
 310                          */
 311                         next_time = hapd->conf->ap_max_inactivity + fuzz;
 312                 } else if (inactive_sec < hapd->conf->ap_max_inactivity &&
 313                            sta->flags & WLAN_STA_ASSOC) {
 314                         /* station activity detected; reset timeout state */
 315                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 316                                 "Station " MACSTR " has been active %is ago",
 317                                 MAC2STR(sta->addr), inactive_sec);
 318                         sta->timeout_next = STA_NULLFUNC;
 319                         next_time = hapd->conf->ap_max_inactivity + fuzz -
 320                                 inactive_sec;
 321                 } else {
 322                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 323                                 "Station " MACSTR " has been "
 324                                 "inactive too long: %d sec, max allowed: %d",
 325                                 MAC2STR(sta->addr), inactive_sec,
 326                                 hapd->conf->ap_max_inactivity);
 327
 328                         if (hapd->conf->skip_inactivity_poll)
 329                                 sta->timeout_next = STA_DISASSOC;
 330                 }
 331         }
 332
 333         if ((sta->flags & WLAN_STA_ASSOC) &&
 334             sta->timeout_next == STA_DISASSOC &&
 335             !(sta->flags & WLAN_STA_PENDING_POLL) &&
 336             !hapd->conf->skip_inactivity_poll) {
 337                 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "Station " MACSTR
 338                         " has ACKed data poll", MAC2STR(sta->addr));
 339                 /* data nullfunc frame poll did not produce TX errors; assume
 340                  * station ACKed it */
 341                 sta->timeout_next = STA_NULLFUNC;
 342                 next_time = hapd->conf->ap_max_inactivity;
 343         }
 344
 345         if (next_time) {
 346                 wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 347                            "for " MACSTR " (%lu seconds)",
 348                            __func__, MAC2STR(sta->addr), next_time);
 349                 eloop_register_timeout(next_time, 0, ap_handle_timer, hapd,
 350                                        sta);
 351                 return;
 352         }
 353
 354         if (sta->timeout_next == STA_NULLFUNC &&
 355             (sta->flags & WLAN_STA_ASSOC)) {
 356                 wpa_printf(MSG_DEBUG, "  Polling STA");
 357                 sta->flags |= WLAN_STA_PENDING_POLL;
 358                 hostapd_drv_poll_client(hapd, hapd->own_addr, sta->addr,
 359                                         sta->flags & WLAN_STA_WMM);
 360         } else if (sta->timeout_next != STA_REMOVE) {
 361                 int deauth = sta->timeout_next == STA_DEAUTH;
 362
 363                 wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
 364                         "Timeout, sending %s info to STA " MACSTR,
 365                         deauth ? "deauthentication" : "disassociation",
 366                         MAC2STR(sta->addr));
 367
 368                 if (deauth) {
 369                         hostapd_drv_sta_deauth(
 370                                 hapd, sta->addr,
 371                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
 372                 } else {
 373                         hostapd_drv_sta_disassoc(
 374                                 hapd, sta->addr,
 375                                 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
 376                 }
 377         }
 378
 379         switch (sta->timeout_next) {
 380         case STA_NULLFUNC:
 381                 sta->timeout_next = STA_DISASSOC;
 382                 wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 383                            "for " MACSTR " (%d seconds - AP_DISASSOC_DELAY)",
 384                            __func__, MAC2STR(sta->addr), AP_DISASSOC_DELAY);
 385                 eloop_register_timeout(AP_DISASSOC_DELAY, 0, ap_handle_timer,
 386                                        hapd, sta);
 387                 break;
 388         case STA_DISASSOC:
 389                 ap_sta_set_authorized(hapd, sta, 0);
 390                 sta->flags &= ~WLAN_STA_ASSOC;
 391                 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 392                 if (!sta->acct_terminate_cause)
 393                         sta->acct_terminate_cause =
 394                                 RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
 395                 accounting_sta_stop(hapd, sta);
 396                 ieee802_1x_free_station(sta);
 397                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 398                                HOSTAPD_LEVEL_INFO, "disassociated due to "
 399                                "inactivity");
 400                 sta->timeout_next = STA_DEAUTH;
 401                 wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 402                            "for " MACSTR " (%d seconds - AP_DEAUTH_DELAY)",
 403                            __func__, MAC2STR(sta->addr), AP_DEAUTH_DELAY);
 404                 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
 405                                        hapd, sta);
 406                 mlme_disassociate_indication(
 407                         hapd, sta, WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
 408                 break;
 409         case STA_DEAUTH:
 410         case STA_REMOVE:
 411                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 412                                HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 413                                "inactivity (timer DEAUTH/REMOVE)");
 414                 if (!sta->acct_terminate_cause)
 415                         sta->acct_terminate_cause =
 416                                 RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
 417                 mlme_deauthenticate_indication(
 418                         hapd, sta,
 419                         WLAN_REASON_PREV_AUTH_NOT_VALID);
 420                 ap_free_sta(hapd, sta);
 421                 break;
 422         }
 423 }
 424
 425
 426 static void ap_handle_session_timer(void *eloop_ctx, void *timeout_ctx)
 427 {
 428         struct hostapd_data *hapd = eloop_ctx;
 429         struct sta_info *sta = timeout_ctx;
 430         u8 addr[ETH_ALEN];
 431
 432         if (!(sta->flags & WLAN_STA_AUTH)) {
 433                 if (sta->flags & WLAN_STA_GAS) {
 434                         wpa_printf(MSG_DEBUG, "GAS: Remove temporary STA "
 435                                    "entry " MACSTR, MAC2STR(sta->addr));
 436                         ap_free_sta(hapd, sta);
 437                 }
 438                 return;
 439         }
 440
 441         mlme_deauthenticate_indication(hapd, sta,
 442                                        WLAN_REASON_PREV_AUTH_NOT_VALID);
 443         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 444                        HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 445                        "session timeout");
 446         sta->acct_terminate_cause =
 447                 RADIUS_ACCT_TERMINATE_CAUSE_SESSION_TIMEOUT;
 448         os_memcpy(addr, sta->addr, ETH_ALEN);
 449         ap_free_sta(hapd, sta);
 450         hostapd_drv_sta_deauth(hapd, addr, WLAN_REASON_PREV_AUTH_NOT_VALID);
 451 }
 452
 453
 454 void ap_sta_session_timeout(struct hostapd_data *hapd, struct sta_info *sta,
 455                             u32 session_timeout)
 456 {
 457         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 458                        HOSTAPD_LEVEL_DEBUG, "setting session timeout to %d "
 459                        "seconds", session_timeout);
 460         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 461         eloop_register_timeout(session_timeout, 0, ap_handle_session_timer,
 462                                hapd, sta);
 463 }
 464
 465
 466 void ap_sta_no_session_timeout(struct hostapd_data *hapd, struct sta_info *sta)
 467 {
 468         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 469 }
 470
 471
 472 struct sta_info * ap_sta_add(struct hostapd_data *hapd, const u8 *addr)
 473 {
 474         struct sta_info *sta;
 475
 476         sta = ap_get_sta(hapd, addr);
 477         if (sta)
 478                 return sta;
 479
 480         wpa_printf(MSG_DEBUG, "  New STA");
 481         if (hapd->num_sta >= hapd->conf->max_num_sta) {
 482                 /* FIX: might try to remove some old STAs first? */
 483                 wpa_printf(MSG_DEBUG, "no more room for new STAs (%d/%d)",
 484                            hapd->num_sta, hapd->conf->max_num_sta);
 485                 return NULL;
 486         }
 487
 488         sta = os_zalloc(sizeof(struct sta_info));
 489         if (sta == NULL) {
 490                 wpa_printf(MSG_ERROR, "malloc failed");
 491                 return NULL;
 492         }
 493         sta->acct_interim_interval = hapd->conf->acct_interim_interval;
 494
 495         /* initialize STA info data */
 496         wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 497                    "for " MACSTR " (%d seconds - ap_max_inactivity)",
 498                    __func__, MAC2STR(addr),
 499                    hapd->conf->ap_max_inactivity);
 500         eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
 501                                ap_handle_timer, hapd, sta);
 502         os_memcpy(sta->addr, addr, ETH_ALEN);
 503         sta->next = hapd->sta_list;
 504         hapd->sta_list = sta;
 505         hapd->num_sta++;
 506         ap_sta_hash_add(hapd, sta);
 507         sta->ssid = &hapd->conf->ssid;
 508         ap_sta_remove_in_other_bss(hapd, sta);
 509
 510         return sta;
 511 }
 512
 513
 514 static int ap_sta_remove(struct hostapd_data *hapd, struct sta_info *sta)
 515 {
 516         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 517
 518         wpa_printf(MSG_DEBUG, "Removing STA " MACSTR " from kernel driver",
 519                    MAC2STR(sta->addr));
 520         if (hostapd_drv_sta_remove(hapd, sta->addr) &&
 521             sta->flags & WLAN_STA_ASSOC) {
 522                 wpa_printf(MSG_DEBUG, "Could not remove station " MACSTR
 523                            " from kernel driver.", MAC2STR(sta->addr));
 524                 return -1;
 525         }
 526         return 0;
 527 }
 528
 529
 530 static void ap_sta_remove_in_other_bss(struct hostapd_data *hapd,
 531                                        struct sta_info *sta)
 532 {
 533         struct hostapd_iface *iface = hapd->iface;
 534         size_t i;
 535
 536         for (i = 0; i < iface->num_bss; i++) {
 537                 struct hostapd_data *bss = iface->bss[i];
 538                 struct sta_info *sta2;
 539                 /* bss should always be set during operation, but it may be
 540                  * NULL during reconfiguration. Assume the STA is not
 541                  * associated to another BSS in that case to avoid NULL pointer
 542                  * dereferences. */
 543                 if (bss == hapd || bss == NULL)
 544                         continue;
 545                 sta2 = ap_get_sta(bss, sta->addr);
 546                 if (!sta2)
 547                         continue;
 548
 549                 ap_sta_disconnect(bss, sta2, sta2->addr,
 550                                   WLAN_REASON_PREV_AUTH_NOT_VALID);
 551         }
 552 }
 553
 554
 555 static void ap_sta_disassoc_cb_timeout(void *eloop_ctx, void *timeout_ctx)
 556 {
 557         struct hostapd_data *hapd = eloop_ctx;
 558         struct sta_info *sta = timeout_ctx;
 559
 560         ap_sta_remove(hapd, sta);
 561         mlme_disassociate_indication(hapd, sta, sta->disassoc_reason);
 562 }
 563
 564
 565 void ap_sta_disassociate(struct hostapd_data *hapd, struct sta_info *sta,
 566                          u16 reason)
 567 {
 568         wpa_printf(MSG_DEBUG, "%s: disassociate STA " MACSTR,
 569                    hapd->conf->iface, MAC2STR(sta->addr));
 570         sta->flags &= ~WLAN_STA_ASSOC;
 571         ap_sta_set_authorized(hapd, sta, 0);
 572         sta->timeout_next = STA_DEAUTH;
 573         wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
 574                    "for " MACSTR " (%d seconds - "
 575                    "AP_MAX_INACTIVITY_AFTER_DISASSOC)",
 576                    __func__, MAC2STR(sta->addr),
 577                    AP_MAX_INACTIVITY_AFTER_DISASSOC);
 578         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 579         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DISASSOC, 0,
 580                                ap_handle_timer, hapd, sta);
 581         accounting_sta_stop(hapd, sta);
 582         ieee802_1x_free_station(sta);
 583
 584         sta->disassoc_reason = reason;
 585         sta->flags |= WLAN_STA_PENDING_DISASSOC_CB;
 586         eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta);
 587         eloop_register_timeout(hapd->iface->drv_flags &
 588                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
 589                                ap_sta_disassoc_cb_timeout, hapd, sta);
 590 }
 591
 592
 593 static void ap_sta_deauth_cb_timeout(void *eloop_ctx, void *timeout_ctx)
 594 {
 595         struct hostapd_data *hapd = eloop_ctx;
 596         struct sta_info *sta = timeout_ctx;
 597
 598         ap_sta_remove(hapd, sta);
 599         mlme_deauthenticate_indication(hapd, sta, sta->deauth_reason);
 600 }
 601
 602
 603 void ap_sta_deauthenticate(struct hostapd_data *hapd, struct sta_info *sta,
 604                            u16 reason)
 605 {
 606         wpa_printf(MSG_DEBUG, "%s: deauthenticate STA " MACSTR,
 607                    hapd->conf->iface, MAC2STR(sta->addr));
 608         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
 609         ap_sta_set_authorized(hapd, sta, 0);
 610         sta->timeout_next = STA_REMOVE;
 611         wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
 612                    "for " MACSTR " (%d seconds - "
 613                    "AP_MAX_INACTIVITY_AFTER_DEAUTH)",
 614                    __func__, MAC2STR(sta->addr),
 615                    AP_MAX_INACTIVITY_AFTER_DEAUTH);
 616         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 617         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DEAUTH, 0,
 618                                ap_handle_timer, hapd, sta);
 619         accounting_sta_stop(hapd, sta);
 620         ieee802_1x_free_station(sta);
 621
 622         sta->deauth_reason = reason;
 623         sta->flags |= WLAN_STA_PENDING_DEAUTH_CB;
 624         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 625         eloop_register_timeout(hapd->iface->drv_flags &
 626                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
 627                                ap_sta_deauth_cb_timeout, hapd, sta);
 628 }
 629
 630
 631 #ifdef CONFIG_WPS
 632 int ap_sta_wps_cancel(struct hostapd_data *hapd,
 633                       struct sta_info *sta, void *ctx)
 634 {
 635         if (sta && (sta->flags & WLAN_STA_WPS)) {
 636                 ap_sta_deauthenticate(hapd, sta,
 637                                       WLAN_REASON_PREV_AUTH_NOT_VALID);
 638                 wpa_printf(MSG_DEBUG, "WPS: %s: Deauth sta=" MACSTR,
 639                            __func__, MAC2STR(sta->addr));
 640                 return 1;
 641         }
 642
 643         return 0;
 644 }
 645 #endif /* CONFIG_WPS */
 646
 647
 648 int ap_sta_bind_vlan(struct hostapd_data *hapd, struct sta_info *sta,
 649                      int old_vlanid)
 650 {
 651 #ifndef CONFIG_NO_VLAN
 652         const char *iface;
 653         struct hostapd_vlan *vlan = NULL;
 654         int ret;
 655
 656         /*
 657          * Do not proceed furthur if the vlan id remains same. We do not want
 658          * duplicate dynamic vlan entries.
 659          */
 660         if (sta->vlan_id == old_vlanid)
 661                 return 0;
 662
 663         /*
 664          * During 1x reauth, if the vlan id changes, then remove the old id and
 665          * proceed furthur to add the new one.
 666          */
 667         if (old_vlanid > 0)
 668                 vlan_remove_dynamic(hapd, old_vlanid);
 669
 670         iface = hapd->conf->iface;
 671         if (sta->ssid->vlan[0])
 672                 iface = sta->ssid->vlan;
 673
 674         if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED)
 675                 sta->vlan_id = 0;
 676         else if (sta->vlan_id > 0) {
 677                 vlan = hapd->conf->vlan;
 678                 while (vlan) {
 679                         if (vlan->vlan_id == sta->vlan_id ||
 680                             vlan->vlan_id == VLAN_ID_WILDCARD) {
 681                                 iface = vlan->ifname;
 682                                 break;
 683                         }
 684                         vlan = vlan->next;
 685                 }
 686         }
 687
 688         if (sta->vlan_id > 0 && vlan == NULL) {
 689                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 690                                HOSTAPD_LEVEL_DEBUG, "could not find VLAN for "
 691                                "binding station to (vlan_id=%d)",
 692                                sta->vlan_id);
 693                 return -1;
 694         } else if (sta->vlan_id > 0 && vlan->vlan_id == VLAN_ID_WILDCARD) {
 695                 vlan = vlan_add_dynamic(hapd, vlan, sta->vlan_id);
 696                 if (vlan == NULL) {
 697                         hostapd_logger(hapd, sta->addr,
 698                                        HOSTAPD_MODULE_IEEE80211,
 699                                        HOSTAPD_LEVEL_DEBUG, "could not add "
 700                                        "dynamic VLAN interface for vlan_id=%d",
 701                                        sta->vlan_id);
 702                         return -1;
 703                 }
 704
 705                 iface = vlan->ifname;
 706                 if (vlan_setup_encryption_dyn(hapd, sta->ssid, iface) != 0) {
 707                         hostapd_logger(hapd, sta->addr,
 708                                        HOSTAPD_MODULE_IEEE80211,
 709                                        HOSTAPD_LEVEL_DEBUG, "could not "
 710                                        "configure encryption for dynamic VLAN "
 711                                        "interface for vlan_id=%d",
 712                                        sta->vlan_id);
 713                 }
 714
 715                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 716                                HOSTAPD_LEVEL_DEBUG, "added new dynamic VLAN "
 717                                "interface '%s'", iface);
 718         } else if (vlan && vlan->vlan_id == sta->vlan_id) {
 719                 if (sta->vlan_id > 0) {
 720                         vlan->dynamic_vlan++;
 721                         hostapd_logger(hapd, sta->addr,
 722                                        HOSTAPD_MODULE_IEEE80211,
 723                                        HOSTAPD_LEVEL_DEBUG, "updated existing "
 724                                        "dynamic VLAN interface '%s'", iface);
 725                 }
 726
 727                 /*
 728                  * Update encryption configuration for statically generated
 729                  * VLAN interface. This is only used for static WEP
 730                  * configuration for the case where hostapd did not yet know
 731                  * which keys are to be used when the interface was added.
 732                  */
 733                 if (vlan_setup_encryption_dyn(hapd, sta->ssid, iface) != 0) {
 734                         hostapd_logger(hapd, sta->addr,
 735                                        HOSTAPD_MODULE_IEEE80211,
 736                                        HOSTAPD_LEVEL_DEBUG, "could not "
 737                                        "configure encryption for VLAN "
 738                                        "interface for vlan_id=%d",
 739                                        sta->vlan_id);
 740                 }
 741         }
 742
 743         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 744                        HOSTAPD_LEVEL_DEBUG, "binding station to interface "
 745                        "'%s'", iface);
 746
 747         if (wpa_auth_sta_set_vlan(sta->wpa_sm, sta->vlan_id) < 0)
 748                 wpa_printf(MSG_INFO, "Failed to update VLAN-ID for WPA");
 749
 750         ret = hostapd_drv_set_sta_vlan(iface, hapd, sta->addr, sta->vlan_id);
 751         if (ret < 0) {
 752                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 753                                HOSTAPD_LEVEL_DEBUG, "could not bind the STA "
 754                                "entry to vlan_id=%d", sta->vlan_id);
 755         }
 756         return ret;
 757 #else /* CONFIG_NO_VLAN */
 758         return 0;
 759 #endif /* CONFIG_NO_VLAN */
 760 }
 761
 762
 763 #ifdef CONFIG_IEEE80211W
 764
 765 int ap_check_sa_query_timeout(struct hostapd_data *hapd, struct sta_info *sta)
 766 {
 767         u32 tu;
 768         struct os_time now, passed;
 769         os_get_time(&now);
 770         os_time_sub(&now, &sta->sa_query_start, &passed);
 771         tu = (passed.sec * 1000000 + passed.usec) / 1024;
 772         if (hapd->conf->assoc_sa_query_max_timeout < tu) {
 773                 hostapd_logger(hapd, sta->addr,
 774                                HOSTAPD_MODULE_IEEE80211,
 775                                HOSTAPD_LEVEL_DEBUG,
 776                                "association SA Query timed out");
 777                 sta->sa_query_timed_out = 1;
 778                 os_free(sta->sa_query_trans_id);
 779                 sta->sa_query_trans_id = NULL;
 780                 sta->sa_query_count = 0;
 781                 eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 782                 return 1;
 783         }
 784
 785         return 0;
 786 }
 787
 788
 789 static void ap_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
 790 {
 791         struct hostapd_data *hapd = eloop_ctx;
 792         struct sta_info *sta = timeout_ctx;
 793         unsigned int timeout, sec, usec;
 794         u8 *trans_id, *nbuf;
 795
 796         if (sta->sa_query_count > 0 &&
 797             ap_check_sa_query_timeout(hapd, sta))
 798                 return;
 799
 800         nbuf = os_realloc_array(sta->sa_query_trans_id,
 801                                 sta->sa_query_count + 1,
 802                                 WLAN_SA_QUERY_TR_ID_LEN);
 803         if (nbuf == NULL)
 804                 return;
 805         if (sta->sa_query_count == 0) {
 806                 /* Starting a new SA Query procedure */
 807                 os_get_time(&sta->sa_query_start);
 808         }
 809         trans_id = nbuf + sta->sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
 810         sta->sa_query_trans_id = nbuf;
 811         sta->sa_query_count++;
 812
 813         os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN);
 814
 815         timeout = hapd->conf->assoc_sa_query_retry_timeout;
 816         sec = ((timeout / 1000) * 1024) / 1000;
 817         usec = (timeout % 1000) * 1024;
 818         eloop_register_timeout(sec, usec, ap_sa_query_timer, hapd, sta);
 819
 820         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 821                        HOSTAPD_LEVEL_DEBUG,
 822                        "association SA Query attempt %d", sta->sa_query_count);
 823
 824         ieee802_11_send_sa_query_req(hapd, sta->addr, trans_id);
 825 }
 826
 827
 828 void ap_sta_start_sa_query(struct hostapd_data *hapd, struct sta_info *sta)
 829 {
 830         ap_sa_query_timer(hapd, sta);
 831 }
 832
 833
 834 void ap_sta_stop_sa_query(struct hostapd_data *hapd, struct sta_info *sta)
 835 {
 836         eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 837         os_free(sta->sa_query_trans_id);
 838         sta->sa_query_trans_id = NULL;
 839         sta->sa_query_count = 0;
 840 }
 841
 842 #endif /* CONFIG_IEEE80211W */
 843
 844
 845 void ap_sta_set_authorized(struct hostapd_data *hapd, struct sta_info *sta,
 846                            int authorized)
 847 {
 848         const u8 *dev_addr = NULL;
 849 #ifdef CONFIG_P2P
 850         u8 addr[ETH_ALEN];
 851 #endif /* CONFIG_P2P */
 852
 853         if (!!authorized == !!(sta->flags & WLAN_STA_AUTHORIZED))
 854                 return;
 855
 856 #ifdef CONFIG_P2P
 857         if (hapd->p2p_group == NULL) {
 858                 if (sta->p2p_ie != NULL &&
 859                     p2p_parse_dev_addr_in_p2p_ie(sta->p2p_ie, addr) == 0)
 860                         dev_addr = addr;
 861         } else
 862                 dev_addr = p2p_group_get_dev_addr(hapd->p2p_group, sta->addr);
 863 #endif /* CONFIG_P2P */
 864
 865         if (authorized) {
 866                 if (dev_addr)
 867                         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_CONNECTED
 868                                 MACSTR " p2p_dev_addr=" MACSTR,
 869                                 MAC2STR(sta->addr), MAC2STR(dev_addr));
 870                 else
 871                         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_CONNECTED
 872                                 MACSTR, MAC2STR(sta->addr));
 873                 if (hapd->msg_ctx_parent &&
 874                     hapd->msg_ctx_parent != hapd->msg_ctx && dev_addr)
 875                         wpa_msg(hapd->msg_ctx_parent, MSG_INFO,
 876                                 AP_STA_CONNECTED MACSTR " p2p_dev_addr="
 877                                 MACSTR,
 878                                 MAC2STR(sta->addr), MAC2STR(dev_addr));
 879                 else if (hapd->msg_ctx_parent &&
 880                          hapd->msg_ctx_parent != hapd->msg_ctx)
 881                         wpa_msg(hapd->msg_ctx_parent, MSG_INFO,
 882                                 AP_STA_CONNECTED MACSTR, MAC2STR(sta->addr));
 883
 884                 sta->flags |= WLAN_STA_AUTHORIZED;
 885         } else {
 886                 if (dev_addr)
 887                         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED
 888                                 MACSTR " p2p_dev_addr=" MACSTR,
 889                                 MAC2STR(sta->addr), MAC2STR(dev_addr));
 890                 else
 891                         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED
 892                                 MACSTR, MAC2STR(sta->addr));
 893                 if (hapd->msg_ctx_parent &&
 894                     hapd->msg_ctx_parent != hapd->msg_ctx && dev_addr)
 895                         wpa_msg(hapd->msg_ctx_parent, MSG_INFO,
 896                                 AP_STA_DISCONNECTED MACSTR " p2p_dev_addr="
 897                                 MACSTR, MAC2STR(sta->addr), MAC2STR(dev_addr));
 898                 else if (hapd->msg_ctx_parent &&
 899                          hapd->msg_ctx_parent != hapd->msg_ctx)
 900                         wpa_msg(hapd->msg_ctx_parent, MSG_INFO,
 901                                 AP_STA_DISCONNECTED MACSTR,
 902                                 MAC2STR(sta->addr));
 903                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 904         }
 905
 906         if (hapd->sta_authorized_cb)
 907                 hapd->sta_authorized_cb(hapd->sta_authorized_cb_ctx,
 908                                         sta->addr, authorized, dev_addr);
 909 }
 910
 911
 912 void ap_sta_disconnect(struct hostapd_data *hapd, struct sta_info *sta,
 913                        const u8 *addr, u16 reason)
 914 {
 915
 916         if (sta == NULL && addr)
 917                 sta = ap_get_sta(hapd, addr);
 918
 919         if (addr)
 920                 hostapd_drv_sta_deauth(hapd, addr, reason);
 921
 922         if (sta == NULL)
 923                 return;
 924         ap_sta_set_authorized(hapd, sta, 0);
 925         wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
 926         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 927         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
 928         wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
 929                    "for " MACSTR " (%d seconds - "
 930                    "AP_MAX_INACTIVITY_AFTER_DEAUTH)",
 931                    __func__, MAC2STR(sta->addr),
 932                    AP_MAX_INACTIVITY_AFTER_DEAUTH);
 933         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 934         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DEAUTH, 0,
 935                                ap_handle_timer, hapd, sta);
 936         sta->timeout_next = STA_REMOVE;
 937
 938         sta->deauth_reason = reason;
 939         sta->flags |= WLAN_STA_PENDING_DEAUTH_CB;
 940         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 941         eloop_register_timeout(hapd->iface->drv_flags &
 942                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
 943                                ap_sta_deauth_cb_timeout, hapd, sta);
 944 }
 945
 946
 947 void ap_sta_deauth_cb(struct hostapd_data *hapd, struct sta_info *sta)
 948 {
 949         if (!(sta->flags & WLAN_STA_PENDING_DEAUTH_CB)) {
 950                 wpa_printf(MSG_DEBUG, "Ignore deauth cb for test frame");
 951                 return;
 952         }
 953         sta->flags &= ~WLAN_STA_PENDING_DEAUTH_CB;
 954         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 955         ap_sta_deauth_cb_timeout(hapd, sta);
 956 }
 957
 958
 959 void ap_sta_disassoc_cb(struct hostapd_data *hapd, struct sta_info *sta)
 960 {
 961         if (!(sta->flags & WLAN_STA_PENDING_DISASSOC_CB)) {
 962                 wpa_printf(MSG_DEBUG, "Ignore disassoc cb for test frame");
 963                 return;
 964         }
 965         sta->flags &= ~WLAN_STA_PENDING_DISASSOC_CB;
 966         eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta);
 967         ap_sta_disassoc_cb_timeout(hapd, sta);
 968 }